TC5 gearing

Old 12-29-2010, 06:53 PM
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Thumbs down TC5 gearing

Hi everyone and ty for any and all info.
I am in the process of finishing up a build of a tc5 roller that i picked up for cheap.it came with a 78 tooth 48p spurr gear and when i attempted to throw the only spare pinion on i had which is a 15 tooth it falls way short of meshing.can someone please help me with some gearing answers. it has the mamba max pro/esc 9000 kv set up with a 7.4 5000 mah 50c lipo and a spekrrum dx3 radio and reciever...not that that info helps...lol
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Old 12-29-2010, 07:06 PM
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Maybe this will help. Either way...it'll come in handy.
http://www.gearchart.com/
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Old 12-29-2010, 08:10 PM
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ya just looking for some starter numbers its not gonna be a race car just a weekend street toy that will only see asphalt. thanks.jake
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Old 12-29-2010, 09:16 PM
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If you have the manual for the motor (or can download it), take a look as the manual may suggest a proper range of gear ratios. Then use the gear chart.
The 15t pinion will never work. With that 78t spur, you should be looking at a tooth count in the mid 20's most likely.
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Old 12-29-2010, 09:16 PM
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You would be best off changing the spur to a larger one, the stock spur is an 87t 48p, that should get the gears meshing (and a more appropriate ratio for a 9000kv). The previous owner was most likely racing a spec class and needed a low ratio FDR.
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Old 12-29-2010, 10:17 PM
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Running a 9000kv you'll need a big spur and a little pinion and watch your temps like a hawk. I'd start with 14/90 and go from there.

Keep a very close eye on Motor, ESC and Battery temps.
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Old 12-30-2010, 04:05 AM
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thank you so very much! what temp should i try and keep my motor at or below?
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Old 12-30-2010, 04:10 AM
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Originally Posted by scgtpman View Post
thank you so very much! what temp should i try and keep my motor at or below?
Keep it below 80 degrees Celsius and you'll be fine.
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Old 12-30-2010, 10:52 AM
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Any idea why the sway bars would have been removed?
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Old 12-30-2010, 12:00 PM
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Originally Posted by scgtpman View Post
Any idea why the sway bars would have been removed?
Previous owner didn't like or perhaps properly understand the way it affected the handling?
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